Flask-RESTX up to 0.5.0 Regular Expression email_regex resource consumption

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Flask-RESTX up to 0.5.0. Impacted is the function email_regex of the component Regular Expression Handler. The manipulation results in resource consumption. This vulnerability was named CVE-2021-32838. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Flask-RESTX up to 0.5.0. Affected is the function email_regex of the component Regular Expression Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. CWE is classifying the issue as CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. This is going to have an impact on availability.

The weakness was presented 09/21/2021 as 372. The advisory is available at github.com. This vulnerability is traded as CVE-2021-32838 since 05/12/2021. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 0.5.1 eliminates this vulnerability. Applying the patch bab31e085f355dd73858fd3715f7ed71849656da is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Flask-RESTX 0.5.1
Patch: bab31e085f355dd73858fd3715f7ed71849656da

Timelineinfo

05/12/2021 🔍
09/21/2021 +132 days 🔍
09/21/2021 +0 days 🔍
09/30/2021 +9 days 🔍

Sourcesinfo

Advisory: 372
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2021-32838 (🔍)
GCVE (CVE): GCVE-0-2021-32838
GCVE (VulDB): GCVE-100-183078

Entryinfo

Created: 09/21/2021 10:19
Updated: 09/30/2021 12:26
Changes: 09/21/2021 10:19 (52), 09/30/2021 12:26 (2)
Complete: 🔍
Cache ID: 216::103

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